Update docker file & github actions with custom nuget source

Author: Bardin08

.github/workflows/build_docker_image.yml

@@ -32,6 +32,6 @@ jobs:
 
             - name: Build and Push Docker Image
               run: |
-                  docker build -t ghcr.io/bardin08/trumpee-gateway:${{ github.event.release.tag_name}} .
+                  docker build -t ghcr.io/bardin08/trumpee-gateway:${{ github.event.release.tag_name}} --build-arg NUGET_API_KEY=${{ secrets.SECRET_TOKEN }} .
                   docker tag ghcr.io/bardin08/trumpee-gateway:${{ github.event.release.tag_name}} ghcr.io/bardin08/trumpee-gateway:latest
                   docker push ghcr.io/bardin08/trumpee-gateway --all-tags 

Dockerfile

@@ -1,10 +1,33 @@
-FROM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS build-env
-WORKDIR src
+ARG NUGET_API_KEY
 
-COPY . .
-RUN dotnet restore
-RUN dotnet publish -c Release -o out
+# STAGE 1: Build Environment
+FROM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS build-env
+WORKDIR /src
 
-FROM mcr.microsoft.com/dotnet/aspnet:8.0-alpine
-COPY --from=build-env /src/out .
-ENTRYPOINT ["dotnet", "./Api.dll"]
+# Copy the project files first for better layer caching (if only code changes)
+COPY *.sln ./
+COPY Gateway.* ./Gateway/
+COPY Api.* ./Api/
+
+# Add the custom NuGet source
+RUN dotnet nuget add source https://nuget.pkg.github.com/trumpee/index.json --name github --username trumpee --password $NUGET_API_KEY --store-password-in-clear-text
+
+# Restore NuGet packages from both sources
+RUN dotnet restore Gateway.sln --source "https://api.nuget.org/v3/index.json" --source "https://nuget.pkg.github.com/trumpee/index.json"
+
+# Build the solution
+RUN dotnet build Gateway.sln -c Release
+
+# Publish the Api project only (assuming this is the main entry point)
+RUN dotnet publish ./Api/Api.csproj -c Release -o /app
+
+# STAGE 2: Runtime Environment
+FROM mcr.microsoft.com/dotnet/aspnet:8.0-alpine 
+WORKDIR /app
+COPY --from=build-env /app .
+
+# Expose the port your application listens on (replace 80 if needed)
+EXPOSE 80
+
+# Define the entry point for your application
+ENTRYPOINT ["dotnet", "Api.dll"]